Stonewort

Scientific Name: Nitella spp.

Distinguishing Characteristics:
Very frail stem with stiff branches that are dichotomously forked several times in to smaller branchlets.
Appearance similar to Chara, but usually found in relatively acidic water.
Can form thick, underwater meadows eventually becoming “topped-out”.
No odor.
Nitella spp. taken by Graves Lovell 
Nitella spp. taken by Graves Lovell

http://www.planethazard.com/phmapone.aspx?lid=30029641

http://www.planethazard.com/phmapone.aspx?lid=30029641